Alright, let's work through 71709308 times 39648635 step by step
71709308 × 39648635 = 39648635 × (71709308)
+ 39648635 × 8 producing 317189080
+ 39648635 × 00 giving us 0
+ 39648635 × 300 yielding 11894590500
+ 39648635 × 9000 what gives us 356837715000
+ 39648635 × 00000 what gives us 0
+ 39648635 × 700000 resulting in 27754044500000
+ 39648635 × 1000000 producing 39648635000000
+ 39648635 × 70000000 that equals 2775404450000000

= 2843176178994580
